Question

Using C++ write two Factorial functions. One using a loop and another using recursion. The program must be in module as well

Answer 1

#include <iostream>

using namespace std;

int fact_iter(int n)

{

int fact = 1;

for(int i=1;i<=n;i++)

fact = fact*i;

return fact;

}

int fact_rec(int n)

{

if(n==1)

return 1;

else

return n*fact_rec(n-1);

}

int main()

{

cout << "5! using iterative : " << fact_iter(5) << endl;

cout << "5! using recursive : " << fact_rec(5) << endl;

return 0;

}